RonSpencerUK Posted July 19, 2009 Share Posted July 19, 2009 I was charging my DX7 using an Ultramat 16, something I've done a couple of times (newish DX7). I had to interrupt the charging and did so by pulling the red battery connector out of the charger. I switched on the DX7 to see how much it was charged and it was completely dead. I plugged it back into the charger and got the "contact break" error message. I looked in the Spektrum instruction book but no mention of deadness that I could see, so I opened the back of the DX7 for a look. There's a fuse in there! Not mentioned in the book and a bit of a pain to extract. The rating is 3A 250V and it's smaller than a normal household plus fuse. Fortunately I had a couple of the correct size and rating knocking about so I got up and running again. Thought I'd post this for other DX7 newbies who might not realise that a spare fuse would be handy to have, and also can anyone suggest a 'non-lethal' way of terminating the charging process?Thanks as ever Quote Link to comment Share on other sites More sharing options...
Klippy Posted July 19, 2009 Share Posted July 19, 2009 Hi Ron, the safest way is to disconnect from the 'prime mover' first, ie the mains. If, as some people do you're charging from a battery charger, it's the same. I normally switch off at the outlet first, then you don't get any nasty transients flying around that can blow fuses. Quote Link to comment Share on other sites More sharing options...
Ross Clarkson Posted July 19, 2009 Share Posted July 19, 2009 Thanks Ron, i am looking at upgrading to the DX7 so this is good advice. Quote Link to comment Share on other sites More sharing options...
Terry Whiting Posted July 20, 2009 Share Posted July 20, 2009 Ron, I personally have made it a habit never to charge with the battery in situ with either transmitter or model. Quote Link to comment Share on other sites More sharing options...
Dave Towell Posted July 20, 2009 Share Posted July 20, 2009 The other option is to use a JR Tx Rx charger. Only a few quid and designed for the job. Quote Link to comment Share on other sites More sharing options...
Stephen Grigg Posted July 20, 2009 Share Posted July 20, 2009 I use the same charger as you Ron and never had a problem.A new DX7 arrived today and charged in about half an hour.It had 10.3v before charging Quote Link to comment Share on other sites More sharing options...
John Privett Posted July 21, 2009 Share Posted July 21, 2009 Posted by Terry Whiting on 20/07/2009 06:46:41:Ron, I personally have made it a habit never to charge with the battery in situ with either transmitter or model. If the batteries are LiPos then I agree - not a good idea to charge in-situ. But if they're NiCds or MiMHs aren't you going to get more problems from wear and tear on the battery leads and connectors from constant removing/replacing and plugging/unplugging than any tiny risk of problems from iin-situ charging? Quote Link to comment Share on other sites More sharing options...
RonSpencerUK Posted July 21, 2009 Author Share Posted July 21, 2009 Hi Stephen - This was the first time I had problems with the charger/DX7 thats why I was a bit concerned when the Tx died on me. Tony - wise words, I'll follow your suggestion if I need to terminate a charge in future. Dave - yeah, I see your point but I spent £100+ on the Graupner and leads to reduce the number of chargers I have. Thanks for the replies, all gratefully recieved. Quote Link to comment Share on other sites More sharing options...
Stephen Grigg Posted July 22, 2009 Share Posted July 22, 2009 I did flatten my battery by leaving the controller on after a confusion of problems that prevented me flying.The battery charged up fine but the length of time it took to charge it did warm up a bit.This is a new DX7.Ibought a DX6i a year ago and had 1 or 3 problems which may have been due to using it with a straight aerial.I bought a secondhand DX7 and Ive had a couple of problems recently.I did a brilliant deal with Galaxy on a new Dx7SE, which I am very happy with.One of the reasons to change and the main reason really is that being secondhand I was always writing over the previous owners settings and worried that I might miss something to the detriment of a model.Im still trying to learn all the settings and basic for me is best,so now Im happy The end Quote Link to comment Share on other sites More sharing options...
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